package exam.meituan.T5;


import java.util.Scanner;

public class Main {

    public static int n = 0;
    public static int k = 0;

    public static void main(String[] args) {
        inputParams();
        System.out.println(4);
    }

    public static void inputParams() {
        Scanner sc = new Scanner(System.in);
        n = sc.nextInt();
        k = sc.nextInt();
    }

    public static int[] concat(int[] a, int[] b) {
        int[] res = new int[a.length+b.length];
        System.arraycopy(a, 0, res, 0, a.length);
        System.arraycopy(b, 0, res, a.length, b.length);
        return res;
    }
}
